The BK Precision TL89T1 Transformer Test Fixture for Bench LCR Meter Models 894 and 895, is an optional accessory that allows models 894 and 895 to test the primary and secondary inductance L1, L2, turn ratio (N, 1/N), mutual inductance (M), and primary and secondary direct-current resistance (R2) of a transformer directly. Additionally, the two common transformer parameters winding equivalent capacitance Co and leakage inductance Lk can be characterized indirectly.